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© 200508 2-1 Description of components ALLISON 1000 & 2000 AUTOMATIC GEARBOXES ΛΦ45/55 series 3 7 2. DESCRIPTION OF COMPONENTS 2.1 SELECTOR LEVER The various gears of the automatic gearbox are selected using the selector lever. The selector lever has four positions for the forward gears (1, 2, 3 and D), a neutral position (N) and a reverse position (R). The neutral position (N) is the usual position for starting and stopping the engine and for longer stationary periods when the engine is idling. The gearbox must not be put in the neutral position when driving. In the drive position (D) the gearbox automatically changes up and down in all forward gears. In positions (1), (2) and (3) the gearbox changes up as far as the selected gear. These positions can be used to keep the engine in the correct rev band or to obtain maximum engine brake performance. To reverse, the selector lever must be in the (R) position. A warning signal is also activated when reversing. V3 00 593 |